Varvar mekaniska diskar upp som INTE är valda som bootdevices vid reboot?

Shutting down and rebooting a computer or resuming it from hibernation cycles the power to the drives in the computer

Attribute #4 of S.M.A.R.T. is Start/Stop Count, which seems to indicate that start/stop count DOES play a role in disk fitness and when to expect a failure.

http://superuser.com/questions/17228/is-turning-off-hard-disk...

Power Cycles. The power cycles indicator counts the number of times a drive is powered up and down. In a server-class deployment, in which drives are powered continuously, we do not expect to reach high enough power cycle counts to see any effects on failure rates. Our results find that for drives aged up to two years, this is true, there is no significant correlation between fail- ures and high power cycles count. But for drives 3 years and older, higher power cycle counts can increase the absolute failure rate by over 2%. We believe this is due more to our population mix than to aging effects. More- over, this correlation could be the effect (not the cause) of troubled machines that require many repair iterations and thus many power cycles to be fixed.

http://superuser.com/questions/197862/how-harmful-is-a-hard-d...

Det bör svara på din fråga, jag antar att du använder hårddisken som en backup disk, föreslår att du tittar på en NAS eller en RAID 1 lösning istället - alternativt en moln-lösning om filerna inte är privata.